public static Bitmap SplatSimple(ITerrainChannel heightmap)
{
const float BASE_HSV_H = 93f / 360f;
const float BASE_HSV_S = 44f / 100f;
const float BASE_HSV_V = 34f / 100f;
Bitmap img = new Bitmap(256, 256);
BitmapData bitmapData = img.LockBits(new Rectangle(0, 0, 256, 256), ImageLockMode.WriteOnly,
PixelFormat.Format24bppRgb);
unsafe
{
for (int y = 255; y >= 0; y--)
{
for (int x = 0; x < 256; x++)
{
float normHeight = heightmap[x, y] / 255f;
normHeight = Utils.Clamp(normHeight, BASE_HSV_V, 1.0f);
Color4 color = Color4.FromHSV(BASE_HSV_H, BASE_HSV_S, normHeight);
byte *ptr = (byte *)bitmapData.Scan0 + y * bitmapData.Stride + x * 3;
*(ptr + 0) = (byte)(color.B * 255f);
*(ptr + 1) = (byte)(color.G * 255f);
*(ptr + 2) = (byte)(color.R * 255f);
}
}
}
img.UnlockBits(bitmapData);
return(img);
}
